A-LevelPhysicsSuperpositionMay/June 2024Paper 1 Q261 Mark
A diffraction grating with N lines per metre is used to diffract light of various wavelengths λ. The graph shows the relation between the diffraction angle θ and λ for different wavelengths in the nᵗʰ order interference pattern. [Figure 26.1] What is the gradient of the graph?
ANn
BN/n
Cn/N
D1/Nn
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of superposition within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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